doesnt hold time = bad cmos battery

but your other symptoms point to a bad mobo.

try the battery....should be cheap.

 

i have gotten cmos errors for a year or so off and on, figured the battery needed replacement
how do i find exactly what kind of battery i need?

mobo worth trying to replace on a laptop or not worth the hassle?

thanks for the help guys

 

cr2032 more than likely

if youre asking how hard it is then it's not worth the hassle, imo. you can find a used good condition laptop on the cheap

 

fried mobo - wouldnt boot up
overheating cpu - -- would boot up but shut off due to excessive heat build ( usually due to shitty fan ( dust build up in fan ) or lack of cpu compound.
bad ram - may boot but will blue screen

all of the above = no boot


But In this case, sounds like something did fry on the M.B yet.....or you may need an exorcist.